Can I use public transport to return home after a Covid test?

Yes, unless you have been instructed by NHS Track and Trace to self-isolate, or if you or a member or your household are experiencing symptoms of Covid-19. You must not use public transport if you have tested positive, and you must self-isolate in your own home.  

If you have to use public transport, you should adhere to government guidelines for safer travel, wear a face covering, and adhere to social distancing guidelines.